Question 1

Figure 12- 1 The Spinal Cord
Use Figure 12- 1 to answer the following questions:
-The spinal cord continues to elongate until about age

Accepted Answer

A)   10 years.
B)   2 months.
C)   4 years.
D)   20 years.
E)   6 months.F) D) and E)
G) A) and B)

Question 2

If the dorsal root of a spinal nerve is severed,

Accepted Answer

A)   the spinal cord would not be able to process information at that level.
B)   the brain would not be able to communicate with that level of the spinal cord.
C)   sensory input would be blocked.
D)   output to visceral organs would be blocked.
E)   output to skeletal muscles would be blocked.F) C) and E)
G) B) and D)

Question 3

The ventral rami of spinal nerves C5 to T1 contribute fibers to the _________ plexus.

Accepted Answer

A)   brachial
B)   cervical
C)   thoracic
D)   sacral
E)   lumbarF) B) and E)
G) B) and D)

Question 4

Mary is in an automobile accident and suffers a spinal cord injury. She has lost feeling in her lower body. Her doctor tells her that swelling is compressing a portion of her spinal cord. Which part of her cord is likely to be compressed?

Accepted Answer

A)   descending tracts
B)   the anterior gray commissures
C)   the anterior white commissures
D)   ascending tracts
E)   the anterior gray hornsF) All of the above
G) A) and B)

Question 5

In the spinal cord, white matter is separated into ascending and descending tracts organized as

Accepted Answer

A)   nuclei.
B)   nerves.
C)   ganglia.
D)   columns.
E)   horns.F) A) and E)
G) C) and E)

Question 6

In________ , axon collaterals extend back toward the source of the impulse and further stimulate the earlier neurons.

Accepted Answer

The answer of In________ , axon collaterals extend back toward...

Question 7

Figure 12- 1 The Spinal Cord
Use Figure 12- 1 to answer the following questions:
-The white matter of the spinal cord contains

Accepted Answer

A)   bundles of dendrites with common origins, destinations, and functions.
B)   bundles of axons with common origins, destinations, and functions.
C)   both axons and dendrites.
D)   sensory and motor nuclei.
E)   interneurons.F) A) and D)
G) A) and C)

Question 8

In which plexus does the ulnar nerve arise?

Accepted Answer

A)   lumbar
B)   sacral
C)   brachial
D)   cervical
E)   cranialF) All of the above
G) B) and D)

Question 9

The posterior horns of the spinal cord contain mainly

Accepted Answer

A)   somatic motor nuclei.
B)   nerve tracts.
C)   sympathetic nuclei.
D)   sensory nuclei.
E)   autonomic motor nuclei.F) A) and B)
G) B) and E)

Question 10

Reflexes based on synapses formed during development are_________ reflexes.

Accepted Answer

A)   innate
B)   acquired
C)   visceral
D)   somatic
E)   vegetativeF) B) and C)
G) A) and B)

Question 11

The specific strip of skin that is innervated by a specific spinal nerve is called an)___________

Accepted Answer

The answer of The specific strip of skin that is...

Question 12

The spinal cord consists of five regions and _______________ segments.

Accepted Answer

A)   31
B)   25
C)   12
D)   5
E)   number varies widely among individualsF) B) and D)
G) B) and C)

Question 13

Figure 12- 1 The Spinal Cord
Use Figure 12- 1 to answer the following questions:
-What is the function of the structure labeled "12"?

Accepted Answer

A)   ascending pathway
B)   somatic sensory receiving
C)   control of visceral effectors
D)   visceral sensory receiving
E)   control of skeletal muscleF) A) and D)
G) A) and C)

Question 14

Reflexes that activate muscles on the same side of the body as the stimulus are called__________

Accepted Answer

The answer of Reflexes that activate muscles on the same...

Question 15

Nerve tracts or fasciculi make up the

Accepted Answer

A)   posterior gray horns.
B)   anterior white columns.
C)   gray commissures.
D)   central canal.
E)   both B and CF) B) and D)
G) C) and D)

Question 16

Compared to the vertebral column, the spinal cord is

Accepted Answer

A)   the same length.
B)   shorter.
C)   longer.
D)   A, B, or C, depending on age
E)   A or C, depending on ageF) A) and C)
G) D) and E)

Question 17

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Accepted Answer

A)   arachnoid mater.
B)   epidural space.
C)   cerebral ventricles.
D)   dura mater.
E)   subarachnoid space.F) A) and C)
G) B) and C)

Question 18

Enlargements of the spinal cord occur

Accepted Answer

A)   adjacent to the anterior median fissure.
B)   in those spinal segments that control the limbs.
C)   near the posterior median sulcus.
D)   in the thoracic region.
E)   in the sacral region.F) A) and D)
G) B) and E)

Question 19

Suppose that you feel something brushing against your abdomen. The sensory information would be carried to the spinal cord over a __________ ramus.

Accepted Answer

The answer of Suppose that you feel something brushing against...

Question 20

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?

Accepted Answer

A)   problems with moving his legs
B)   loss of sensation in his torso
C)   inability to breathe
D)   uncontrollable sweating of his feet
E)   problems with moving his armsF) C) and D)
G) A) and B)

Exam 12: The Spinal Cord, Spinal Nerves, and Spinal Reflexes

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

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The posterior horns of the spinal cord contain mainly

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Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -The white matter of the spinal cord contains

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Nerve tracts or fasciculi make up the

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Enlargements of the spinal cord occur

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The spinal cord consists of five regions and _______________ segments.

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Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -What is the function of the structure labeled "12"?

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Compared to the vertebral column, the spinal cord is

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In________ , axon collaterals extend back toward the source of the impulse and further stimulate the earlier neurons.

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Reflexes based on synapses formed during development are_________ reflexes.

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Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?

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Suppose that you feel something brushing against your abdomen. The sensory information would be carried to the spinal cord over a __________ ramus.

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The ventral rami of spinal nerves C5 to T1 contribute fibers to the _________ plexus.

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Reflexes that activate muscles on the same side of the body as the stimulus are called__________

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In which plexus does the ulnar nerve arise?

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In the spinal cord, white matter is separated into ascending and descending tracts organized as

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The specific strip of skin that is innervated by a specific spinal nerve is called an)___________

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Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -The spinal cord continues to elongate until about age

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Mary is in an automobile accident and suffers a spinal cord injury. She has lost feeling in her lower body. Her doctor tells her that swelling is compressing a portion of her spinal cord. Which part of her cord is likely to be compressed?

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If the dorsal root of a spinal nerve is severed,

Correct AnswerverifiedShow Answer

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